I know this comes up fairly regularly, and I have trolled through 20+ threads but none of them seem to help me.
So I have a Toshiba L850D with AMD A10 cpu/gpu with an external HD77**M in crossfire. The problem I am encountering seems to be common, yet different everytime.
I have installed the proprietary drivers (post release drivers) from the Ubuntu "Additional Drivers" program, yet it says they are "This driver is activated but not in use".
Now I got the drivers from AMD website to work on Debian 7 which I have removed due to being very immature at the moment and packages seem to be always broken for me so I am on Ubuntu now, can't remember the version but the latest as of 16-May-2013.
The Realtek drivers I have installed are showing in the additional drivers program, but are showing activated and in use.
Are my Radeon drivers actually in use but the program is trying to troll me?
Now I am fairly new to Linux, so please bare with me, but if you give a code to throw into term I can do it and sometimes be able to understand what the hell is going on. But don't expect me to be able to suggest and try things myself =S (sorry).